United States Nuclear Regulatory Commission - Protecting People and the Environment

ACCESSION #: 9810210169


Rosemount Nuclear Instruments Rosemount Nuclear Instruments, Inc.
12001 Technology Drive
 
14 October 1998 Edan Prairie, MN 55344 USA
Tel 1 (612) 828-8252
Fax 1 (612) 628-8280
Re: Notification under 10 CFR Part 21 for Rosemount Model 1154 Series H Alphaline Nuclear Pressure Transmitter-Nuclear Specification: Radiation
Pursuant to 10CFR Part 21 Paragraph 21.21 (b), Rosemount Nuclear Instruments, Inc. (RNII) is writing to inform you that certain data contained in the qualification and type test reports for Rosemount Model 1154 Series H Alphaline Nuclear Pressure Transmitter, which were used to specify the radiation performance identified in relevant product data sheets and manuals, were incorrectly tabulated and reported. This results in a small change to the 1154 Series H Nuclear Pressure Transmitter 30-minute radiation accuracy specification. All other radiation and other accident level specifications are unaffected.
References:
(a) Rosemount Report D8700096, "Qualification Report for Rosemount Model 1154 Series H Pressure Transmitter"
(b) Rosemount Report D8700097, "Type Test Report for Rosemount Model 1154 Series H Pressure Transmitter"
(c) Rosemount Model 1154 Series H Alphaline Nuclear Pressure Transmitter, Product Data Sheet 400813-0100-4631, March 1996 and a listing of obsolete versions of the product data sheets.
(d) Rosemount Model 1154 Series H Alphaline Nuclear Pressure Transmitter, Product Manual #00809-0100-4631, March 1996 and a listing of the obsolete version of the product manual.
As documented in Section 7.1 of ref. (a), excerpts attached as Appendix A, a radiation specification was developed for Rosemount Model 1154 Series H Nuclear Pressure Transmitter based upon an envelope of observations of output shift (in mV) in 13 different test transmitters while exposed to radiation testing at an average dose rate of 2.07 Mrads p er hour. The resultant specification, shown on page 4 of ref. (c) and page 4-1 of ref. (d), excerpts of which are shown in Appendices C and D, states that during the first thirty minutes of radiation exposure, output accuracy will be within +/- (0-2% of upper range limit + 0.2% of span). This specification was based on the observation that 13 qualification test units appeared to perform within these limits. However, a review of ref. (b) shows that the test data supporting the 30-minute radiation specification were incorrectly transposed from actual raw test data.
The tabulated data in Table 31 of ref. (b), contained in excerpts attached as Appendix B, compares the output shift observed during the first 30 Minutes of the radiation test with the allowed output shift using the 30- minute specification, Table 28 of ref. (b), also shown in Appendix B, exhibits data collected at various points during radiation testing. The 15- minute output data from Table 29 was incorrectly transposed into Table 31 of ref. (b) as the output shift seen during the first 30 minutes of accident radiation. The original strip charts from the test confirm this transposition. This transposition error also occurs in Table 3 of Section 7.1 of ref, (a), shown in Appendix A.


FISHER ROSEMOUNT
10CFR21 Notification
14 October 1998
Page 2 of 4

Upon entering the correct 15 minute and 30 minute data into Table 31 of ref. (b), 5 of the 13 test units do not perform within The 30 minute specification (See corrected revision to Table 31 below), Therefore, the conclusion stated on page 10 of reference (a), "All of the test units performed within this new specification"was incorrect. Also incorrect was the statement "All of the test units performed within the thirty minute specification" on p. 72 of ref (b), shown in Appendix B. The specification of +/- (0.2% of upper range limit + 0.2% of span) did not envelope all of the test observations. Consequently, Rosemount has opened the limits using the corrected output shifts, resulting in a new specification of +/- (0-25% of upper range limit + 0.75% of span) including 15 minute and 30 minute excursions within the first 30 minutes. The results of comparing the corrected test results against the revised interval are exhibited in Table 1 below. The test results for all 13 qualification units fall within the revised specification.

Corrected Table 31 of Rosemount Report D8700097- Maximum Shift Seen During First 30 Minutes of Accident Radiation, with Fixed Input (output shifts outside of specification shown in bold

Allowed Shift (mV)

S/N Output Shift (mV)-corrected +/-(0.2% URL + 0.2% SPAN)-Original Specification
402857 -3 +/-32
402858 +34 +/-32
402859 +3 +/-32
402851 +40 +/-108
402852 +70 +/-108
402353 +119 +/-108
402954 +22 +/-32
402855 +73 +/-32
402856 +33 +/-32
*_/ 402847 +130 +/-76
402860 -29 +/-76
402862 -16 +/-76
402850 +30 +/-32

*_/ This unit failed during the radiation testing. The failure of the unit is addressed in ref. (b).

10CFR21 Notification
14 October 1998
Page 3 of 4

Table 1. Maximum shift seen during first 30 minutes, including 15 minute data, of accident radiation with fixed input (corrected output data versus new envelope)

Allowed Shift (mV)
S/N Output Shift (mV)-corrected +/-(0.25% URL + 0.75% SPAN)-new specification
402857 -3 +/-80
402858 +34 +/-80
402859 +3 +/-80
402851 +40 +/-175
402852 +70 +/-175
402853 +119 +/-175
402854 +22 +/-80
402855 +73 +/-80
402856 +33 +/-80
*_/ 402847 +130 +/-135
402860 -29 +/-135
402862 -16 +/-135
402850 +30 +/-80

*_/This unit failed during the radiation testing. The failure of the unit is addressed in ref. (b).


1.0 Name and address of the individual providing the information;
Mr. Jeffrey W. Schmitt
Vice President & General Manager
Rosemount Nuclear Instruments, Inc.
12001 Technology Drive
Eden Prairie. MN 55344

2.0 Identification of items supplied;

Model 1154 Series H Alphaline Nuclear Pressure Transmitter (Please see Attachment for Model Number, Serial Number and Purchase Order Number)

3.0 Identification of firm supplying the item:

Rosemount Nuclear Instruments, Inc,
12001 Technology Drive
Eden Prairie, MN 55344

4.0 Nature of the failure and potential safety hazard:

RNII does not have sufficient information to determine the safety impact related to plant applications. Licensees must determine the impact on plant operations and plant safety and take action as deemed necessary.

5.0 The corrective action which is taken, the name of the individual or organization responsible for that action and the length of time taken to complete that action:

Specified radiation performance of any Model 1154 Series H Nuclear Pressure Transmitter can be determined from the corrected original test data shown in Corrected Table 31 and the revised maximum output shift of +/-(0-25% of upper range limit + 0.75% of span) within the first 30 minutes. All subsequent shipments of the Model 1154 Series H Nuclear Pressure Transmitter will be to this revised specification. Moreover, the qualification test report will be revised within 30 days to reflect the new maximum output shift, Until such time as the Product Data Sheets and the Manuals are revised to reflect the new 30 minute radiation accuracy of +/-(0.25% of upper range limit + 0,75% of span) errata sheets will be issued to show These changes. Additional errata sheets will be made available for users requesting them to include in 1154 Series H manuals already shipped from Rosemount Nuclear Instruments, Inc. Following these actions, we consider this matter closed.

6.0 Any advice related to the potential failure of the item;

The end user must determine the full scope of this nonconformance as it relates to plant operations and plant safety and take action as deemed necessary. Rosemount Nuclear Instruments, Inc. has a strong commitment to the nuclear industry and assures you that we are dedicated to the supply of high quality products and services to our customers. We are sorry for any inconvenience. If there are any questions, or you require additional information related to this issue. please contact Jerry Edwards (612) 828-3951, Mike Dougherty (612) 828-5626 or Gerard Hanson (612) 928-3480.
Sincerely,

ROSEMOUNT NUCLEAR INSTRUMENTS, INC.

Jeffrey W. Schmitt
Vice President & General Manager




Appendix

Excerpts from Reference (a) Rosemount Report D8700096, "Qualification Report for Rosemount Model 1154 Series H Pressure Transmitter"

  • +10% margin was added to the acceleration requirements at the mounting point of the equipment (the Test Response Spectrum exceeded the maximum acceleration of the Required Response Spectrum by 10%).
  • Margin was applied to the environmental transient by performing the peak transient (without temperature and pressure margin) twice. IEEE 323-1983 states that margin may be applied in two ways. Either a +15 Degrees F temperature margin and a +10% pressure margin may be added to the peak transient, OR the peak transient without temperature and pressure margin may be applied twice. Rosemount has chosen the second method of applying margin during the environmental transient. Therefore, the LOCA/HELB simulation consisted of a margin transient as well as an accident transient.
  • A one year post-accident aging simulation was conducted to provide a +10% margin on equipment operating time following the start of the DBE. The post-accident aging was conducted to demonstrate operability for up to one year after the DBE.

7.0 DESIGN BASIS EVENT SIMULATION

The Design Basis Event was simulated by subjecting the aged test units to accident tests performed in the following order: Accident Radiation' Test, Seismic Test, and LOCA/HELB Test. The results of this testing is described in the following.

7.1 Accident Radiation

The test units were exposed to an average total integrated dose (TID) of 57.91 Mrads from a Cobalt 60 (gamma) radiation source as described in paragraph 1.0.0 of Reference 2.5. A minimum exposure to 55.5 Mrads was required which included 50 Mrads accident dosage, 0.5 Mrads of background radiation and 10% margin an the accident dosage (5 Mrads).

The following dose rate schedule was achieved: 2.07 Mrad/hr for 2 hours; 1.50 Mrad/hr for 4 hours; 1.20 Mrad/hr for 45.5 hours. The testing was conducted at Process Technology in West Memphis, Arkansas.

Table 2 summarizes the maximum shifts that were seen during the test. It was from this data that a new accident radiation specification of +/-(0.5% URL + 1.0% Span) was developed. All of the test units, with the exception of S/N 402847, performed within this new specification. Test unit S/N 402847 did not exhibit a "hard failure" (where the transmitter does not operate) however, it did perform outside of the acceptance criteria. Because it was necessary to know what was responsible for this performance, the test unit was submitted for failure analysis. See Appendix 4 of Reference 2.5 for the failure analysis report. Table 3 summarizes the maximum shifts that occurred during the first thirty minutes of radiation exposure. A new specification of +/-(0.2% URL + 0.2% Span) will apply for the first thirty minutes of radiation exposure. All of the test units performed within this new specification.

Qualification of the Model 1154 Series H pressure transmitter during accident radiation conditions has been demonstrated by the performance of these test units after previous exposure to thermal and functional aging.

ROSEMOUNT REPORT D8700096 PAGE 10

TABLE 2 - MAXIMUM SHIFT SEEN DURING ACCIDENT RADIATION WITH FIXED INPUT, 57.51 Mrads TID

ALLOWED SHIFT (mV)
S/N OUTPUT SHIFT (mV) +/-(0.5% URL + 1.0% SPAN)
402857 + 29 +/-120
402858 +115 +/-120
402859 + 55 +/-120
402851 -205 +/-311
402852 +163 +/-311
402853 +305 +/-311
402854 +100 +/-120
402855 +111 +/-120
402856 +110 +/-230
*_/ 402847 +364 +/-230
402860 +100 +/-230
402862 -170 +/-230
402850 +110 +/-120

*_/ This unit was submitted for Failure Analysis upon return to Rosemount (see Appendix 4 of Reference 2.5).

ROSEMOUNT REPORT D8700096 PAGE 11

TABLE 3 - MAXIMUM SHIFT SEEN DURING FIRST 30 MINUTES OF ACCIDENT RADIATION, WITH FIXED INPUT

ALLOWED SHIFT (mV)
S/N OUTPUT SHIFT (mV) +/-(0.2% URL + 0.2% SPAN)
402857 - 3 +/- 32
402838 + 22 +/- 32
402859 + 3 +/- 32
402851 + 40 +/-108
402852 + 70 +/-108
402853 + 76 +/-108
402854 + 12 +/- 32
402855 + 31 +/- 32
402856 + 9 +/- 32
402847 + 51 +/- 76
402860 - 10 +/- 76,
402862 + 1 +/- 76
402850 + 17 +/- 32

ROSEMOUNT REPORT D8700096 PAGE 12


Appendix B

Excerpts from Reference (b) Rosemount Report D8700097,

"Type Test Report for Rosemount Model 1154 Series H Pressure Transmitter" particular reading could be taken. Table 29 presents data from the accuracy checks that were made periodically throughout the test.

Table 30 shows the maximum shifts that were seen during the test. It was from this data that a new accident radiation specification of +/-(0.5% URL + 1.0% Span) to 55 Mrads was developed. Table 31 shows the maximum shifts that occurred during the first thirty minutes of radiation exposure. In the past, Rosemount has never specified the performance during the first thirty minutes. since there are many customers interested in this information, a new specification of +/-(0.2% URL + 0.2% Span) will apply for the first thirty minutes of radiation exposure.

All of the test units performed within the thirty minute specification. All of the test units, with the exception of S/N 402847, performed within the 55 Mrad specification. Because of excessive drift in output of S/N 402847 during radiation, it was pulled from the test program upon return to Rosemount and submitted for failure analysis (see QTDR 021). Since the transmitter did not return to Rosemount until after. the seismic testing that followed, this transmitters was allowed to be subjected to the seismic event.

The failure analysis (F.A.R. No. 1150) could not recreate the failure of S/N 4028471 Indicating the transmitter had corrected itself sometime between radiation and failure analysis. Failure analysis was, however, continued (F.A.R. No. 1231) in an attempt to isolate the problem to either the transmitter electronics or the module. Although the previous problem of output drift during thermal aging disappeared following replacement of the electronics, the high grounding shifts that occurred with two different replacement electronics indicates it wasn't a problem with the electronics. Analysis of the circuit boards found them to be working properly, thus the problem was isolated to the module. Further testing of the module did not unfortunately expose any problems. The module performed normally during an accuracy check, capacitance check, and testing of the module with temperature. Based on the transmitter performance during the qualification test events and results of the failure analysis, it is hypothesized there was current leakage in the module electronics resulting in drift and intermittent shorting to ground. Moisture present in the module, due to either residual flux or humidity, could produce these effects when a potential leakage path exists in the module electronics. This potential leakage path would be present if there were cracks in the insulation of the wires or electronic components or if the solder pads were too close together on the circuit board. Because the module corrected itself it is

ROSEMOUNT REPORT 08700097 PAGE 72

TABLE 28 "ACCIDENT RADIATION OUTPUT SHIFTS" omitted.

ROSEMOUNT REPORT D8700097 PAGE 75

TABLE 31 - MAXIMUM SHIFT SEEN DURING FIRST 30 MINUTES OF ACCIDENT RADIATION, WITH FIXED INPUT

ALLOWED SHIFT (mV)
S/N OUTPUT SHIFT (mV) +/-(0.2% URL + 0.2% SPAN)
402857 - 3 +/- 32
402858 + 22 +/- 32
402859 + 3 +/- 32
402851 + 40 +/-108
402852 + 70 +/-108
402853 + 76 +/-108
402854 + 12 +/- 32
402855 + 31 +/- 32
402856 + 9 +/- 32
*_/ 402847 + 51 +/- 76
402860 - 10 +/- 76
402862 + 1 +/- 76
402850 + 17 +/- 32

*_/ This unit was submitted f or Failure Analysis upon return to Rosemount.

ROSEMOUNT REPORT D8700097 PAGE 81

Appendix C:

Excerpts from Reference (c) Rosemount Model 1154 Series H Alphaline Nuclear Pressure Transmitter, Product Data Sheet #00813-0100-4631, March 1996

Note: Obsolete versions of ref (c) are Product Data Sheet 4631, Rev. 8/93 and Product Data Sheet 2631, 1989

SPECIFICATIONS

Nuclear Specifications

Qualified to IEEE Std. 323-1974 and 344-1976 per Rosemount Report D8700096.

Radiation

Accuracy within +/-(0.2% of upper range limit + 0.2% of span) during first 30 minutes; : +/-(0.5% of upper range limit + 1.0% of span) after 55 megarads total integrated dosage (TID); +/-(0.75% of upper range limit +1.0% of span) after 110 megarads TID gamma radiation exposure.

Seismic

Accuracy within +/-0.5% of upper range limit during and after a disturbance defined by a required response spectrum with a horizontal ZPA of 8.5 g's, and a vertical ZPA of 5.2 g's.

Steam Pressure/Temperature

Accuracy within +/-(1.0% of upper range limit + 1.0% of span) for range codes 4-8; +/-(2-0% of upper range limit + 0.5% of span) for range code 9 during and after sequential exposure to steam at the following temperatures and pressures, concurrent with chemical spray for the first 24 hours.

420 Degrees F (215.6 Degrees C), 85 psig for 3 minutes
350 Degrees F (176.6 Degrees C), 85 psig for 7 minutes
320 Degrees F (160 Degrees C), 75 psig for 8 hours
265 Degrees F (129.4 Degrees C), 24 psig for 66 hours

Chemical Spray

Chemical spray composition is 0.28 molar boric acid, 0.064 sodium thiosulfate, and sodium hydroxide to make an initial pH of 11.0 and a subsequent pH ranging, 8.5 to 11.0. Chemical spray is sprayed at a rate of 0.25 gal/min/ft**2.

Post DBE Operation

Accuracy at reference conditions shall be within +/-2.51% of upper range limit for one year following DBE.

Quality Assurance Program

In accordance with NQA-1, 10CFR50 Appendix B, and ISO 9001.

Nuclear Cleaning

To 1 ppm maximum chloride content.

Hydrostatic Testing

To 150% of maximum working, pressure or 2,000 psi (13.8 MPa), whichever is greater.

Traceability

In accordance with NQA-1 and 10CFR50, Appendix B; chemical and physical material certification of pressure retaining parts.

Qualified Life

Dependent on continuous ambient temperature at the installation site, illustrated in Figure 4. Replacement of amplifier and calibration circuit boards at the end of their qualified life permits extension of the transmitter's qualified life to the module's qualified life. See Rosemount Report D8700096.

Figure 4 "Qualified Life vs. Ambient Temperature." omitted

Performance Specifications

(Zero-based Spans, Reference Conditions)

Accuracy

+/-0.25% of calibrated span. Includes combined effects of linearity, hysteresis and repeatability.

Deadband

None.

Drift

+/-0.2% of upper range limit for thirty months

Temperature Effect

Ranges 4-8:

+/-(0.15% upper range limit + 0.35% span) per 50 Degrees F (27.8 Degrees C) ambient temperature change between 40 Degrees F (4.4 Degrees C) and 130 Degrees F (54.4 Degrees C).

Range 9:

+/-(0.25% of upper range limit + 0.5% span) per 50 Degrees F (27.8 Degrees C) ambient temperature change between 40 Degrees F (4.4 DC) and 130 Degrees F (54.4 Degrees C).

All Ranges;

+/-(0.75% of upper range limit + 0.5% span) per 100 Degrees F (55.6 Degrees C) ambient Temperature change between 40 Degrees F (4.4 Degrees C) and 200 Degrees F (93.3 Degrees C).


Appendix D

Excerpts from Reference (d) Rosemount Model 1154 Series H Alphaline Nuclear Pressure Transmitter, Product Manual #00809-0100-4631, March 1996

Note: Obsolete version of ref (d) is Manual 4631 (April 1989) Specifications and Reference Data

NUCLEAR SPECIFICATIONS (Qualified to IEEE Std. 323-1974 and IEEE Std, 344-1975 per Rosemount Report D8700096)
 
Radiation Accuracy within +/-(0.2% of Upper range limit + 0.2% of span) during first 30 minutes; +/-(0.5% upper range limit + 1% span) after 55 megarads total integrated dosage (TID); +/-(0.75% upper range limit + 1% span) after 110 megarads TID gamma radiation exposure.
Seismic Accuracy within +/-0.5% of upper range limit during and after a disturbance defined by a required response spectrum with a horizontal ZPA of 8.5 g's and a vertical ZPA of 5.2 g's.
Steam Pressure/Temperatures Accuracy within +/-(1.0% of upper range limit + 1.0% of span) for range codes 4-8; +/-(2.0% upper range limit + 0.5% span) for range code 9 during and after sequential exposure to steam at the following temperatures and pressures, concurrent with chemical spray for the first 24 hours:
420 Degrees F (215.6 Degree C), 85 psig for 3 minutes
350 Degrees F (176.6 Degrees C), 85 psig for 7 minutes
320 Degrees F (160 Degrees C), 75 psig for 8 hours
265 Degrees F (129.4 Degrees C), 24 psig for 56 hours
Chemical Spray Chemical Spray composition is 0.28 molar boric acid, 0.064 molar sodium thiosulfate, and sodium hydroxide to make an initial pH of 11.0 and a subsequent pH ranging from 8-5 to 11.0. Chemical spray is sprayed at aerate of 0.25 gal/min/ft **2.
Post DBE Operation Accuracy at reference conditions shall be within +/-2.5% of upper range limit for one year following DBE.
Quality Assurance Program In accordance with NQA-1, 10CFR50 Appendix B and ISO 9001.
Nuclear Cleaning To 1 ppm maximum chloride content.
Hydrostatic Testing To 150% of maximum working pressure or 2,000 psi (13.8 MPa), whichever is greater.
Traceability In accordance with NQA-1 and 10CFR50 Appendix B; chemical and physical material certification of pressure retaining parts.
Qualified Life Dependent on average ambient-temperature at the installation site; illustrated in Figure 4-1. Replacement of amplifier and calibration circuit boards at the end of their qualified life permits extension of the transmitter's qualified life to the module's qualified life. See Rosemount Report D8700096.

4-1


GENERAL INFORMATION or OTHER EVENT NUMBER: 34923
LICENSEE: ROSEMOUNT NUCLEAR INSTRUMENTS, INC NOTIFICATION DATE: 10/16/98
CITY: EDEN PRAIRIE REGION: 3 NOTIFICATION TIME: 14:40[ET]
COUNTY: STATE: MN EVENT DATE: 10/16/98
LICENSE#: EVENT TIME: 00:00[CDT]
DOCKET: AGREEMENT: N
LAST UPDATE DATE: 10/16/98
NOTIFICATIONS
NRC NOTIFIED BY: JEFFREY W. SCHMITT VERN HODGE (VIA FAX) NRR
HQ OPS OFFICER: BOB STRANSKY
EMERGENCY CLASS: NOT APPLICABLE
10 CFR SECTION: CCCC 21.21 UNSPECIFIED PARAGRAPH
EVENT TEXT
10 CFR PART 21 REPORT REGARDING INCORRECTLY TABULATED INFORMATION REGARDING RADIATION PERFORMANCE.


"PURSUANT TO 10CFR PART 21 PARAGRAPH 21.21(b), ROSEMOUNT NUCLEAR INSTRUMENTS, INC. (RNII) IS WRITING TO INFORM YOU THAT CERTAIN DATA CONTAINED IN THE QUALIFICATION AND TYPE TEST REPORTS FOR ROSEMOUNT MODEL 1154 SERIES H ALPHALINE NUCLEAR PRESSURE TRANSMITTER, WHICH WERE USED TO SPECIFY THE RADIATION PERFORMANCE IDENTIFIED IN RELEVANT PRODUCT DATA SHEETS AND MANUALS, WERE INCORRECTLY TABULATED AND REPORTED. THIS RESULTS IN A SMALL CHANGE TO THE 1154 SERIES H NUCLEAR PRESSURE TRANSMITTER 30-MINUTE RADIATION ACCURACY SPECIFICATION. ALL OTHER RADIATION AND OTHER ACCIDENT LEVEL SPECIFICATIONS ARE UNAFFECTED."


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